{"action":"Upgrade icu to 3.8-6 or later.","affected":[{"fixed":"3.8-6","introduced":"0"}],"component":"icu","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["3.8-6"],"id":"tcs_01M5N8W65R65HY39DPZ4WD7SXW","modified_at":"2026-10-21T17:47:39.338132725Z","published_at":"2008-01-29T00:00:00Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2007-4770","https://security-tracker.debian.org/tracker/CVE-2007-4770"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2007-4770#Debian:13/icu","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2007-4770"}],"summary":"libicu in International Components for Unicode (ICU) 3.8.1 and earlier attempts to process backreferences to the nonexistent capture group zero (aka \\0), which might allow context-dependent attackers"}